Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b5254d191ae9748…

MALICIOUS

PDF

70.3 KB Created: 2020-08-24 00:32:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4fe4869d93e39df876d6cca918c977ad SHA-1: b71409fa66efb09d9a7e7f8ee00a9282c9e4d5a1 SHA-256: 8b5254d191ae9748e2202435886434e09a54f2b7aa01039bd84e3ef95171044a
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `ttraff.com`. It also exhibits characteristics of a PDF link farm, with numerous links to external PDFs hosted on various domains, including `cdn.shopify.com`. The document body, though heavily obfuscated, contains the URL `https://ttraff.com/pify?keyword=appendix+science+report+example`, reinforcing the redirector finding. The primary attack pattern involves luring the user to click this malicious link, likely leading to further compromise.

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.com/pify?keyword=appendix+science+report+example
    • http://mefaner.3blossomscafe.com/uploads/1/3/2/8/132814439/3079174.pdf
    • http://files.floridacprhearttraining.com/uploads/1/3/1/4/131407406/litelezorafo-xowaleg-rixokexamuxu.pdf
    • http://gizexa.nepscholarshipfund.com/uploads/1/3/1/3/131379477/8840838.pdf
    • http://muxenul.eastbudleigh.org.uk/uploads/1/3/1/3/131380058/dibojuw-tinexu-pomazozosowoz.pdf
    • http://files.quizking.net/uploads/1/3/0/8/130874120/borajarakiwi.pdf
    • https://cdn.shopify.com/s/files/1/0429/4829/6857/files/damuwopotugibos.pdf
    • https://cdn.shopify.com/s/files/1/0434/9827/4978/files/93932706801.pdf
    • https://cdn.shopify.com/s/files/1/0433/2745/5382/files/42945015102.pdf
    • https://cdn.shopify.com/s/files/1/0434/5289/1298/files/muludogun.pdf
    • https://cdn.shopify.com/s/files/1/0429/0543/6326/files/32771385967.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/nazowexoratusitufunu.pdf
    • https://cdn.shopify.com/s/files/1/0435/1400/3610/files/kenmore_water_softener.pdf
    • https://cdn.shopify.com/s/files/1/0432/5982/2244/files/pofofalera.pdf
    • https://cdn.shopify.com/s/files/1/0431/1787/1255/files/canon_rebel_xs_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5207/2086/files/madafevejejoxexom.pdf
    • https://cdn.shopify.com/s/files/1/0436/0473/8206/files/sintomas_de_ansiedad_generalizada.pdf
    • https://cdn.shopify.com/s/files/1/0434/0423/0805/files/65778003499.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d517.bin
6c930f7a3f8bc2b306e363d92e6d75fd446e7cd6316d8794fccfd696ad6b4973
pdf-font-stream PDF embedded font (sfnt) at offset 0xD517 5276 bytes
font_01_sfnt_off0000e6e7.bin
015cb28b5cd1406a1309cbd9a6b85892aa5998d8c4bccc6783269ff2a38f661e
pdf-font-stream PDF embedded font (sfnt) at offset 0xE6E7 10928 bytes